Traveling-bed feed for wood planers



April 7, 1931. E. BLOOD TRAVELING BED FEED FOR WOOD PLANERS Filed June 20, 1929 2 Sheets-Sheet I April 7, 1931. L. E. BLOOD TRAVELING BED FEED FOR WOOD PLANERS- 2 sheets Sheet 2 Filed June 20, 1929 mm mm Patented Apr. 7, 1931 UNITED STATES .PATE

NT OFFICE LAURENCE moon, or nos'ron, IiIASSACI-IUSETTS, ASSIGNOB TO s. A. woops MA- CHINE COMPANY, or BOSTON, mnssaonnsm'rs, A CORPORATION or MASSACHU- SETTS Application filed June 20,

t This invention relates to a traveling bed I provide an efficient, sturdy and inexpensive construction having, furthermore, certain advantages which will appear as the description proceeds. r

My invention will be well understood by reference to the following description, taken in connection with the accompanying drawings of an illustrative embodiment of the device, wherein 1 p Fig. 1 is a fragmentary, side elevation of a wood-planing machine illustrating the organization therewith of a feeding mechanism illustrative of my invention;

Fig. 2 is a longitudinal section, showing the feeding mechanism in side elevation;

Fig. 3 is a section on line 3-3 of Fig. 2; and i Fig. 4: is a fragmentary plan view of the traveling bed proper.

Referring to Fig. 1, I have there shown a portion of a wood-planing machine having the top head 5, beneath which the pieces of wood are advanced in endless succession by the feed mechanism shown at the right, one piece of work pushing another beneath the cutting knives. The feeding mechanism cmbodies the traveling bed 7, to be described in detail hereafter, against the upper run of i which the work is pressed by means of suitable cooperating pressure means, such as the driven rolls 9, mounted to swing about the center 11, and pressed toward the bed by the springs 13. The construction of these 00- operating pressing members herein shown by way of example is not in itself novel, and does not require extended description. As will appear, the top of the bed beneath these rolls is essentially flat or uniform and the work is fed by being gripped between the same and the rolls 9and projected forward by such frictional engagement.

Referring to Fig. 4, to form the bed I may utilize bar-like links 15, longitudinall disposed and arranged in staggered relation,

TRAVELING-BED IFGR 00D PLANERS i929. Serial at. 372,329.

and linked together by transverse pins 17 to form one or more endless chains (see Fig. 2). Herein the pins 17 are shown extending across the entire width of the feeding bed to form a single chain and, in any case, the

effect as of the single chain, the parts being operated{substantially as a unit by the driving sprockets. The exposed faces of the links form a substantially uniform bed without major projections, such as the feed lugs utilized on some types of conveyors to push forward the work, and on this bed the work is pressed by the rolls 9. i it The pins 17 may also receive rollers 19, interspersed with the links in longitudinal series, three rows of said rollers being herein shown. As best seen in Fig. 3, the rollers 19 and links 15 are of suchsize that the former are received wholly below the exposed faces of the latter and form no part of the work-engaging face of the chain. However, therollers are herein shown as projecting inwardly beyond the inner faces of the links, so that they may runon a suitable support 21 underlying the upper run of the chain, this support being herein shown as a table provided with openings 23, but of course continuous like a rail under each series ofrollers 19 utilized for supporting purposes. The support and the rolls may be suitably shaped coopera- The rolling support provided by rollers 19 2 permits utilizing the device and the feeding mechanism in installations in which great pressure is exercised, as by means of the rolls 9, and as is required in the case of a planer feed. The construction is obviously rugged, simple and cheap. While the exposed sur face of the traveling bed 7 is substantially uniform, yet spaces are provided between the links facilitating the discharge of dirt and small particles, which, in the example of the invention shown, may gravitatethrough the openings 23. When the feed is utilized on a planer in the more restricted technical sense of the word, that is, in a planing machine feeding relatively large and heavy. boards,

7 the honeycombed surface serves effectively to however, that the invention is useful and adaptable to planets in the more general grip the stock, without, however, objectionablymarring it. It should be understood,

sense of the word, that is, any machine in which wood is cut by planing knives and in which the feed projects the work forward to a relatively remote point of operation of such knives. I v V I am aware that the invention may be embodied in other specific forms without, departing from the spirit or. essential attributes thereof, and I therefore desire the present embodiment torbe considered in all respects as illustrative and not restrictive; reference being had to the appended claims rather than to the foregoing description to indicate the scope of the invention.

I claim:

1. In a wood-planing machine the feed mechanism for advancing the work to a remote point of operation of planing knives, comprising the travelling bed consisting of a plurality of bar-like links longitudinally disposed in staggered relation, hinge pins j oining said links in an endless chain to provide a substantially uniform but perforate supporting surface, rollers on said pins, interspersed with said links and disposed inwardly of the the same, rollers turning on the pins, said rollers received inwardly of the outer face of the links and projecting inwardly beyond them, a support for the upper run of the chaln on which at least certain of said rollers travel, and cooperating pressure means opposing sai'd'run to confine workfagainst the exposed faces of said links for frictional advance thereby, and sprockets for supporting prevent lateral movement thereof, and cooperating pressure means opposing said run to confine workagainst the exposed faces of said links for frictional advance thereby, and. sprockets for supporting and driving the chain meshing with at least certain of said rollers.

In testimony whereof, I have signed my name to this specification;

man-anon i1. BLOOD.

outer face thereof but projecting beneath the same, a support for the upper run of the chain on which at least certain of said rollers travel, pressure means for confining the Work to said'run, sprockets engaging at least certain ofthe rollers and means for driving the chain thereby.

2. In a wood-planing machine the feed mechanism for advancing work to a remote point of operationof planing knives, comprising the travelling bed consisting of a multiplicity of bar-like links longitudinally disposed in staggered relation, transverse hinge pins joining said links in an endless chain, rollers turning on said pintles but re- Ceived beneath the exposed faces of the links,

a" support for the upper run of the chain on which at least certain of said rollers travel, cooperating pressure means for engaging the work between the same and the exposed faces of said links in said upper run and sprockets for supporting and driving the chain meshmg with at least certainof said rollers.

3. A travelling feed bed comprising an staggered longitudinally extending bar-like links andtransverse hinge pins connecting,

endless chain consisting of a'multiplicity of v 

